User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Configuration
Rev. B - 1/97
3-31
8 data bits
no parity
Protocol Modems
Protocol modems support MNP or other data compression. Since protocol
modems introduce unneeded complications for flow control, and the AirLink Pro
T1/E1 Rack Mount modem data rate needs are modest, such protocols should be
turned off. However, error correction should be enabled if available; it will
prevent garbage characters from appearing on the remote terminal when the
unit hangs up the modem. This option is normally enabled by factory default on
modems equipped with it.
RTS Control
RTS Control allows the Request-To-Send (RTS) line to be set to Continuous or
Switched. When set to Continuous, the RTS is asserted at all times. When set
to Switched, the RTS line is asserted.
The unit will wait a reasonable time (so the unit does not hang) for the modem
to release the CTS line before reasserting the RTS line to begin any future
transmit cycles. The Switched mode is used with modem sharing devices.
When the DTR line is needed for modem sharing devices, it can be configured to
perform the modem enable function. If the DTR line is configured for a modem
sharing device, it will perform the same as the RTS line and the response will
come from the CTS line.
Responses
All numeric responses are followed by <CR> (ASCII 13 decimal). All “word”
responses are followed by <CR> and <LF> (ASCII 10 decimal).